baber/WOPTO huggingface dataset:
Patent GB-391191-A (GB)
Title: Improvements relating to the finishing of pile fabrics
IPC: D06C29/00
Filed: 1931-10-21
Abstract: 391,191. Finishing pile fabrics. BRITISH CELANESE, Ltd., 22, Hanover Square, London, DICKIE, W. A. and GENTLE, A. H., c/o British Celanese, Spondon, near Derby. Oct. 21, 1931, No. 29213. [Class 42 (i).] The pile of pile fabrics is glossed or flattened over the whole surface or in stripes or checks while applying water or other vapour to the part being treated. The invention is particularly applicable to the treatment of fabrics of which the pile contains cellulose acetate or other organic derivatives of cellulose. The fabric 10 passes around guide rollers 11, 12 and a tension roller 13 to a steam-box 17 provided with a steam-pipe 20 directing the steam to a baffle 21 so that the vapour is evenly distributed in the box and passes through the fabric while it is acted on by a bar 23 covered with felt 24. The fabric passes thence to a porcupine drag roller 18. The bar may have cut-away parts so that the fabric is treated in strips, or a wooden roller having cut-away parts and driven at a lower speed than that of the fabric may be employed for treating the pile to produce check effects. Means may be provided for adjusting the pressure of the bar or roller on the fabric and for moving it out of contact therewith. A hood 26 may be employed to conduct acetone vapour to a recovery plant.
Patent GB-1005136-A (GB)
Title: Ceramic compositions
Inventor: INGLES THOMAS ALAN
IPC: B22C1/00
Filed: 1963-07-25
Abstract: A shaped body for use as a core for casting metals or alloys is prepared by moulding a mixture of tricalcium silicate, or ingredients which will react on heating to form tricalcium silicate, and a binder or casting an aqueous slurry of ingredients which will react on heating to form tricalcium silicate and firing the formed shape at 1075-1125 DEG  C. 10-80% by weight of inert refractory material, e.g. dead burned magnesia, beryllia, zircon, ground porcelain and alumina may be included in the mixture.  The mixture may be shaped by isostatic pressing, injection moulding, compression and transfer moulding, extrusion and casting.  The examples describe slip casting Wollastonite and plaster, injection moulding Wollastonite, calcium carbonate and polystyrene and pressing a mixture of Wollastonite, calcium carbonate, dead-burned magnesia and paraffin wax.
Patent GB-748237-A (GB)
Title: A steroid compound
IPC: C07J5/00
Filed: 1953-10-26
Abstract: The invention comprises 11b ,17a -dihydroxypregnane-3,20-dione and the preparation thereof by mixing 17a -hydroxypregnane-3,11,20-trione with an alkanediol of the formula <FORM:0748237/IV(a)/1> wherein R1 and R2 represent hydrogen or alkyl radicals containing from 1 to 6 carbon atoms and n is 0 or 1 and where the total number of carbon atoms in the diol is between 2 and 8, in the presence of an acid catalyst to produce a 3,20-cyclic diketal thereof, reducing the thus obtained 17a -hydroxy-pregnane-3,11,20-trione-3,20-cyclic diketal with an alkali metal aluminium hydride or an alkali metal borohydride or hydrogen in the presence of a hydrogenation catalyst to produce 11b ,17a -dihydroxypregnane-3,20-dione, 3,20-cyclic diketal which is then hydrolysed with dilute mineral acid or a strong organic acid in the presence of water to form 11b ,17a  - dihydroxypregnane - 3,20 - dione, 3,20-cyclic diketal which is then hydrolysed with dilute mineral acid or a strong organic acid in the presence of water to form 11b ,17a  - dihydroxypregnane - 3,20 - dione.  Suitable acid catalysts are m- and p-toluenesulphonic acids, naphthalene sulphonic acid, benzenesulphonic acid, o-chlorbenzenesulphonic acid and sulphuric acid.  The preferred reducing agents are lithium aluminium hydride, lithium borohydride, sodium borohydride and hydrogen in the presence of platinum or Raney nickel.  The alkanediol may be an alkane-1,2- or -1,3-diol containing 2 to 8 carbon atoms.  A suitable temperature at which the diketal compounds may be formed is between about 20 DEG  and about 200 DEG  C.-preferably between about 20 DEG and about 150 DEG  C.  The hydrolysis step may be carried out without isolating the reduction product, a suitable temperature at which the hydrolysis may be carried out being between about 0 DEG  and 100 DEG C.  In the examples 11b ,17a  - dihydroxypregnane - 3,20 - dione is prepared by the above process using the following diols for the diketal formation:-ethylene glycol and propane-1,2-and -1,3-diol. The Specification also refers to 17a -hydroxy-pregnane-3,11,20-trione, 3,20-cyclic diketals and 11b ,17a - dihydroxy - pregnane - 3,20 - dione, 3,20-cyclic diketals in which the ketal groups are derived from butane-1,2-, -1,3- and -2,3-diols, pentane-1,2- and -1,3-diol, 3-methyl-pentane-1,2-diol, hexane-1,2- and -1,3-diol, heptane-1,2- and -1,3-diol and octane -1,2- and -1,3-diol. Specification 748,236 is referred to.
Patent GB-715470-A (GB)
Title: Improvements in and relating to fire and temperature alarm systems
IPC: G08B29/02
Filed: 1950-12-04
Abstract: 715,470. Fire and temperature alarm systems. MORRIS, J., and MORRIS & SONS, Ltd., J. Oct. 25, 1951 [Dec. 4, 1950], No. 29574/50. Class 118 (1). A fire or temperature alarm system comprises a pair of detectors connected in two arms of a Wheatstone bridge, a differential relay in series with the bridge supply to indicate a break or a short circuit, a first detecting relay to indicate a fault or fire according to the direction of unbalance of the bridge, and a second detecting relay in series with the first detecting relay to indicate a fault for excessive unbalance in the same direction as caused by a temperature increase. In Fig. 1, one or more pairs of detector elements 15 are inserted in arms 13 and 14 of a Wheatstone bridge the two elements of each pair having different temperature co-efficients. The other two arms of the bridge consist of fixed resistances 16 and 17, adjustment being effected by potentiometer 18. Pointer 19, associated with a device connected across the diagonal, indicates temperature and is central under balanced conditions. If the temperature rises sufficiently, the bridge unbalances and contacts 20 and 21 close to operate slowoperating relay 23, the contacts of which close a self-holding circuit, operate a fire alarm and stop machinery or effect similar operations. Fault conditions are indicated by means of relay 28, the contacts 30, 31, of which also serve to disable fire alarm relay 23 and effect a selfholding circuit. Relay 28 may be energised in three ways; (i) by means of contacts 20, 22 which close when the bridge unbalances in the opposite sense from the fire alarm conditions; (ii) by means of contact 33 which is normally balanced in the neutral position by means of a pair of solenoids 34, 35. Solenoid 34 is in series with the bridge, and solenoid 35 is energised independently of the bridge so that failure of the bridge supply or short circuiting of resistances in the bridge circuit will operate relay 28. (iii) by relay 39 and its contacts 38, which close when the bridge circuit becomes sufficiently unbalanced, due for example to open circuiting or short circuiting of one of the arms. The detector elements may comprise resistance materials having different temperature co-officient, or one of the elements may be shielded or lagged. Suitable metal shields, in which a part only of the shield is perforated, are described for this purpose. The invention may be used to detect overheating in parts of machinery, such as a coal mine conveyer belt or a ship propeller shaft, or to detect abnormal temperature changes in chemical processes.
Patent GB-1351480-A (GB)
Title: Magnetic devices
IPC: C04B35/26
Filed: 1971-06-24
Abstract: 1351480 Magnetic storage arrangements WESTERN ELECTRIC CO Inc 24 June 1971 [29 June 1970] 29609/71 Heading H3B A sheet of material which can support single wall domains has a magnetic pattern on one or both surfaces which causes domains to move along the sheet when a rotating or otherwise re-orienting field is applied in the plane of the sheet. The sheet anisotropy and the magnitude of the field applied are such that for a rotating field the domain moves as in Fig. 3, each end of the domain describing an annulus. The magnetic patterns in Fig. 2 consist, on each surface, of a straight region of magnetization 13 or 15 and a region 12 or 14 having a scalloped edge. The constraints imposed on the domain by these patterns cause it to move along a path between the straight and scalloped edges as the field rotates, Figs. 4-8 (not shown). Motion is due to coherent rotation rather than domain wall motion and high bit rates are achieved; the field is thus rotated at a high rate, e.g. 10 MHz. The magnetic pattern shown in Fig. 2 is such as to repel the domain ends, but the straight edges may alternatively attract the domain ends. Provided high speeds are used, the pattern need only be on one face of the sheet, the other end of the domain being constrained sufficiently by viscous damping. The pattern may be formed by etching or by a writing technique such as Curie point or compensation point writing, or by a permanent magnetic overlay such as Co 3 Cu 2 Sm. Suitable dimensions and magnetic properties are given. In use, Fig. 1 (not shown), a conventional field is applied to maintain the domain size stable, while writing is by a conductor loop and reading by a further loop or a Hall effect device.
Patent GB-463708-A (GB)
Title: An improved down draught preventing chimney pot or ventilator
IPC: F23L17/08
Filed: 1935-10-01
Abstract: 463,708. Chimneys &c. SNELLING, J. C. Oct. 1, 1935, Nos. 29675/36 and 14342/36. Divided out of 463,690. [Class 25] The top or an intermediate section of a chimney or ventilator comprises a plurality of superposed rings with upper and lower arcuate surfaces b curving inwardly and vertically upwards, the curve becoming steeper for each successive superposed ring and the top edges j of the rings successively increasing in diameter so as to form an upwardly expanding flue (as shown by the lines k) and circumferentially spaced seatings a or spacing members which support the various rings in superposed relation. The top or intermediate section may be built up of separate ring sections as described in Specification 463,690 or may be integral. The tubular portion e below the rings tapers at the upper end so as to give a Venturi form to the flue or top. When the member is intended to form an intermediate section, the upper part is extended and adapted to receive the end of a tubular extension and a down draught deflector b is provided. Such a deflector may also be employed in a chimney or ventilator top.
Patent GB-1048906-A (GB)
Title: Cyanoacrylate esters
Inventor: HALPERN BENJAMIN DAVID
IPC: C09J135/04
Filed: 1964-07-23
Abstract: The invention comprises compounds of the formula <FORM:1048906/C2/1> where R is <FORM:1048906/C2/2> <FORM:1048906/C2/3> or <FORM:1048906/C2/4> wherein x is 2-30.  The compounds are made by esterifying the appropriate glycol or polyethylene glycol with cyanoacetic acid and condensing the resulting dicyanoacetate with formaldehyde in the presence of a condensing agent, e.g. zinc acetate, piperidine, piperidine acetate.  The dicyanoacrylates and polymers thereof are used in adhesive compositions (see Division C3). Examples relate to the dicyano-acrylates of ethylene glycol, diethylene glycol and neopentyl glycol.ALSO:The invention comprises dicyanoacrylates of the formula <FORM:1048906/C3/1> where R is <FORM:1048906/C3/2> or <FORM:1048906/C3/3> wherein x is 2-30, and homopolymers thereof and copolymers of 10 parts by wt. thereof and 1-9 parts by wt. of vinyl chloride, vinyl acetate, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, styrene and/or vinyl toluene. The dicyanoacrylates of polyethylene glycol are made by esterifying the PEG with cyanoacetic acid and condensing the resulting dicyanoacetate with formaldehyde. Some carbon-to-carbon polymerization may occur during the preparation of the monomers, but the homopolymers and copolymers are also made by heating to higher temperatures, e.g. 80-150 DEG  C., the presence of an initiator, e.g. Na or K persulphate, benzoyl peroxide or azobisisobutyronitrile. The compounds and polymers are used in adhesive compositions in admixture with 2-10 parts by wt. of a volatile, inert solvent, e.g. acetone, methyl ethyl ketone or N,N-dimethylformamide.
Patent GB-470679-A (GB)
Title: Apparatus for contact treatment of materials
IPC: B01J8/02
Filed: 1936-11-02
Abstract: <PICT:0470679/III/1> <PICT:0470679/III/2> <PICT:0470679/III/3> In apparatus comprising a reaction chamber containing a contact mass and having at least two groups of conduits embedded in the mass, the conduits are supported by means borne by the casing in a manner which permits relative movement, due to expansion, of the casing and the conduits.  In the modification shown the two sets of conduits 12, 13 are supported by a plate 6 which forms one end of the reaction chamber 2.  This plate rests upon a ring 14 attached to the casing 1 and is attached thereto by bolts 15 passing through slots which permit relative movement.  The plate is further supported by a beam structure 9 resting freely upon ring 11.  The conduits 13 are slidably fitted in the upper tube plate 5, and the passage of fluid between the conduits and the guide sleeves is prevented by rings 23, Fig. 5, or flexible members 24, Fig. 6.  Specifications 345,496, 345,511, 346,967, 414,779, and 449,671 are referred to.
Patent GB-691586-A (GB)
Title: Improvements in radio or radar aerials
IPC: H01Q13/02
Filed: 1951-12-20
Abstract: 691,586. Aerials. BOHM, O. M., KIBBLER, G. O. T. H., and BUCKINGHAM, J. Dec. 20, 1951, No. 29836/51. Class 40 (vii). An aerial comprises a hollow metallic waveguide of rectangular cross-section with parallel longitudinal slots in its wider faces and transversely tapering (i.e. wedge-shaped) metallic extensions sideways of the said wider faces and projecting transversely for distances of about one wavelength from the narrow faces of the guide. The wedge-shaped extensions may be solid but are preferably made hollow as shown for lightness and to provide a shielded passage for the feeder where a vertical array is fed centrally. The effect of the extensions (explained with reference to the diagrams of Figs. 1, 2 and 3 (not shown), is to produce a substantially uniform radiation pattern right round the aerial. The faces of the extensions need not be flat but may be convex or concave and the edges may be rounded off. The slots may be central and probe excited or displaced from the mid-line to the broad face of the guide as shown. The vertical extent of the aerial can be increased as required to give directivity in the vertical plane.
Patent GB-206012-A (GB)
Title: Improvements in or relating to frames for photographs, pictures, and the like
IPC: A47G1/10
Filed: 1922-11-01
Abstract: 206,012. Smith, A. E. B. Nov. 1, 1922. Picture and like frames. - In picture, photograph, and like frames, channel members 1, Fig. 1, preferably mitred at the corners, are arranged to form a flush joint between each pair of adjacent members, and are secured together at the corners by sheet metal strips 3 passed through loops, eyes, &c. 2 on the members and folded at the ends over the loops &c. The loops &c. 2 are arranged to lie substantially parallel to the plane of the joint between two channel members, and may be pressed out in relief when the members are of metal. Fig. 3 shows a modification wherein aT-shaped metal strip 5 is used for securing the members together, the vertical arm being inserted in an auxiliary loop 6 upon the back-board of the frame and the horizontal arm being slipped laterally within hook-like lugs 4 upon the frame members 1, after which the three ends of the strip are bent over.
Patent GB-219568-A (GB)
Title: Improvements in propellers for aeroplanes
IPC: B64C11/04
Filed: 1923-11-27
Abstract: 219,568. Standard Steel Propeller Co., (Assignees of Dicks, T. A.). Sept. 1, 1923, [Convention date]. Screw propellers; balancing. - Where blades are screwed into sockets in the screw propeller boss additional support is provided by flaring the end of the socket and forcing in a split circular wedge. The blade roots are slotted for the purpose of receiving balance weights. The boss 1 has two sockets 10, each being internally threaded at the bottom and flared at the end 15. When the blade root is screwed into position, conical circular wedges 16 are forced against the end 15 and blade root by a screwed sleeve 18. The boss is held on the taper end of the shaft by two nuts 3, 7. In a modification, the sockets are carried by a ring which is keyed to the central part of the boss and held by a nut against endwise motion. For balancing purposes, the roots of the blades may be drilled and the hole tapped whereby a plug of soft metal, such as lead, may be inserted into the hole.
Patent GB-176042-A (GB)
Title: Improvements in cleaners for tubes of steam generators or the like
IPC: B08B9/04
Filed: 1920-10-22
Abstract: 176,042. Midzui, M. Oct. 22, 1920. Cleaning internally, rotary appliances for.-In a tubecleaner of the 'turbinedriven type comprising cooperating stationary and revolving grooved or vaned wheels 3, 8 mounted with their peripheries closely fitted to the inner face of a cylindrical casing 1, the spindle 7 carrying the rotary wheel 8 is mounted in a bearing - metal 5 screwed into the front end of the casing 1, so that the spindle and its associated parts may be readily removed for examination and adjustment. A thrust bearing 9 between the revolving wheel and the bearing-metal 5 and a radial bearing 10 between the spindle 7 and the stationary wheel are arranged as shown. The bearing-metal has radial ribs 6 between which the driving liquid escapes into the tube in which the cleaner is working. A scraper 14 provided with toothed wheels 15 is mounted on the spindle 7 by means of a universal joint 13.
Patent GB-208316-A (GB)
Title: Improvements relating to paving blocks, stair treads and the like
IPC: E01C5/22
Filed: 1922-11-02
Abstract: 208,316. Jennings, H. Nov. 2, 1922. Flooring blocks.-In paving- blocks, stair treads, and the like, tubes 1 of relatively hard material are embedded in the upper surface and a wooden filling 3 is provided in each tube. The tubes project slightly above the upper surface and each may be secured by a transverse peg 4. If desired, the filling 3 may form part of the block, an annular recess being provided to receive the tube.
Patent GB-935703-A (GB)
Title: Dentifrice compositions
Inventor: HOLDEN JOHN CRESSWELL
IPC: A61Q11/00
Filed: 1960-08-31
Abstract: A tooth paste comprises the combination of a water-soluble aluminium salt, a polishing agent and a binding agent which are stable to acid and added water-soluble acid in an amount such that 10 grams of the tooth paste require at least 10.2 c.c. of 0.1N sodium hydroxide solution to bring the tooth paste to pH 7.0. Sufficient aluminium salt such as the sulphate, chloride, fluoride or nitrate may be used to bring the content of water soluble combined aluminium in the tooth paste up to 0.01 to 0.2%. Specified polishing agents are calcium sulphate, hydrated alumina and china clay.  The binder may be Guar gum, hydroxyethyl cellulose and acid stable carragheenic acid derivatives.  The water-soluble acid is preferably a mineral acid such as sulphuric hydrochloric or nitric acid.  The pH of the tooth paste is usually not more than 3.2 and is most frequently between 2 and 3.
Patent GB-1219071-A (GB)
Title: Target feedback radar system
IPC: F42C13/04
Filed: 1958-09-18
Abstract: 1,219,071. Pulse radar. CANADIAN ARSENALS Ltd. 18 Sept., 1958 [24 Sept., 1957], No. 29989/58. Heading H4D. In a variable P.R.F. range measuring system, the P.R.F. at short ranges is fixed by a delay line. In the circuit shown, a multivibrator 1 with a natural frequency less than the P.R.F. for the maximum detection range controls a pulse generating and transmitting system capable of producing very short (~0À03 Ásec.) pulses of R.F. energy from a klystron oscillator 5. When a return echo is received it is detected at 7, amplified, and then delayed for 5-15 Ásec. at 11 before being used to synchronize the multivibrator; the P.R.F. then becomes a measure of the distance of the target. At zero range the P.R.F. does not become very large, but is controlled by the delay, at about 100 kc./sec. The output of the multivibrator is taken off through a band pass filter 12 acting as a gate, for use as a missile fuze or as a collision-warning device. The automatic gain control loop 10 cuts out noise-modulated jamming, and the integrator eliminates jamming with a constantly varying P.R.F. The invention can also be used as an altimeter.
Patent GB-533942-A (GB)
Title: Improvements relating to the separation and recovery of short fibrous asbestos from granular asbestos-bearing rock
IPC: B07B4/00
Filed: 1939-11-14
Abstract: 533,942. Systems for reducing asbestosbearing rocks. TURNER & NEWALL, Ltd.. and ELLISON, W. J. Nov. 14, 1939. No. 30064. [Class 59] Fibrous asbestos is recovered from its naturally occurring rocks by conveying the granular material in an air stream from a feeder casing 19 in which a high speed rotary beater operates through one or more similar units 20 ... 24, in all of which the material is treated solely by impact, the heavier rock particles being thereafter removed by collision with an adjustable baffle member 50 in a baffle box 33 and the complete separation of the asbestos being effected by subsequent known methods. The beaters are of similar construction and comprise a central shaft 25, Fig. 3, carrying rods 26 disposed angularly to each other and arranged spirally around the shaft; the angle may be 45 per cent. as shown. The rods may be arranged other than radially from the shaft and they may incline forwards or backwards to the direction of rotation. The beaters rotate at 750 to 2,500 revolutions per minute, 2000 being the normal speed. The profiles of the casings are similar to each other and are shaped so as to vary the clearance with the rod ends at various parts. The clearance in the zone 35 to 36 is about # inch; at the air-cutting point 37 about inch ; and from the point 38 to 40 the clearance gradually increases to about # inch. The casings may be arranged horizontally, vertically or angularly to each other. The feeder chamber 19 is attached to a supply chamber 16 over which air enters and is induced through the plant by a fan 28. The material is fed to the chamber 16 in a thin stream from a shaking table 12, the lower edge 15 of which is constituted by a wire screen of about “ inch aperture. In the plant shown, the fibre is separated from the smaller rock particles by a centrifugal separator 30, preferably of the cyclone type; a further separation may be effected by a rotary screen 54.
Patent GB-1224032-A (GB)
Title: Improvements in or relating to fluid seals
IPC: B01J19/18
Filed: 1968-06-24
Abstract: 1,224,032. Fluid seal for autoclave; polymerization apparatus. DART INDUSTRIES Inc. 24 June, 1968 [23 June, 1967], No. 30059/ 68. Heading B1X. [Also in Division F2] A seal for a passage 9 in an autoclave comprises a member 11 which extends across the passage and is provided with one or more grooves for resilient sealing rings 13 and expander rings 14, there being a clearance space in the grooves to allow the pressure within the autoclave to urge the sealing rings outwardly and against the side walls of the grooves. The sealing rings may be made of rubber or PTFE and the expander rings may be made of stainless steel. The assembly may be secured by screws 21 to the motor housing 8a of an agitator 7. The effectiveness of the seal was tested by continuously adding ethylene and an organic free radical initiator into the reaction section 5 and the ethylene was converted to polyethylene within a pressure range of 18,000 to 30,000 p.s.i. and a temperature range of 300 to 600F.